Tube-cleaner.



No. 770,313. PATENTED SEPT.,20, 1904. G. 0. QUASEBARTH. TUBE CLEANER.

APPLICATION FILED SEPT. 12. 1903.

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PATENTED SEPT. 20-, 1904.

G. G. QUASEBARTH.

TUBE CLEANER. APPLIOATIOH FILED 2mm. 12. 1903.

- UNTTED STATES Patented September 20, 1904.

ATENT @FFIQE.

GUSTAV O. QUASEBARTH, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ON E-H ALF TO WILLIAM N. MATTHEWS & BROTHER, OF ST. LOUIS,

MISSOURI.

SPECIFICATION forming part of Letters Patent No. 770,313, dated September 20, 1904.

Application filed September 12, 1903. Serial No. 172,918. klio model.)

To all whom it may concern.-

Be it known that I, GUs'rAv O. QUAsEBAR'rH, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Tube-Cleaners, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a top plan view. Fig. 2 is an elevation on about the line 2 2 of Fig. 1. Fig. 3 is a horizontal sectional view. Fig. 41 is a side elevation. Fig. 5 is a vertical sectional elevation. Fig. 6 is a fragmentary view of the inside face of one of the outer casing-sections, and Fig. 7 is a sectional view of the piston.'

This invention relates to improvements in tube-cleaners, being more particularly adapted as a device for cleaning scales and the like from boiler-tubes.

The object is to provide a device of simple and convenient construction and efficient operation, the device comprising but few parts which can be readily assembled and to which access can be easily had for repair, &c.

To these ends and also to improve generally upon devices of the character indicated the invention consists in the various matters hereinafter described and claimed.

Referring now more particularly to the drawings, A indicates the casing, and B the hammer or tappet. The hammer or tappet is mounted to oscillate upon its pivot, and such oscillationis produced by steam or some other suitable fluid under pressure admitted to the casing, as through an inlet-pipe O, which also serves as a handle, as is common in devices of the character of the present. The casing with its carried hammer being inserted in a boiler tube or flue and steam being admitted to the casing, the hammer oscillates and hits the inner walls of the tube, thus loosening the scales and the like in a manner which will be readily understood.

In the present device the casing is composed of three sections 1, 2, and 3, which when united present a substantiallycylindrical body, the sections 1 and 2 being substantially what maybe termed the outer slabs and the sec tion 3 being the central slab of a cylinder divided by two longitudinal cuts. The said sections are preferably secured together by headed screws 4, which pass through the respective side sections and enter the central section. Each of said side sections 1 and 2 has a substantially central longitudinal passage 5, which extends from a point near what may be termed the forward end of the section to a point near the rear end thereof, an opening 6 leading from the rear end of the passage to that face of the side section which when the parts are assembled abuts against the central section. The passage 5 can be conveniently formed by boring from the forward end of the section and inserting a plug 7 in the forward end of the bore in order to close the forward end of the passage 5, as desired. Each passage 5 at its forward end is in communication with an opening 8 in what may be termed the inner face of the side section-'21. 6., the face which when the parts are assembled abuts against the central section. The central casing-section has a piston chamber formed therein and extending from side to side thereof. This chamber comprises an inner portion 9, whose wall describes more than a semicircle, and an outer portion 10, whose forward wall 11 describes a curved line concentric with the curved wall of said portion 9. The inner end of the central section 3 is provided with an opening 12 for receiving the inlet-pipe O, and from said opening 12 extend passages 13, (produced by a bore extending from side to side of the central section, which when the parts are assembled register with the before-mentioned openings 6.

The piston has a substantially segmental body portion 14:, upon whose inner end is a pivotal portion 15, adapted to fit and rock in the before-mentioned portion 9 of the pistonchamber. At each side of the piston are municate with ports or passages 17, formed in the piston and extending from the ports 16 to the piston edge. One set of ports 16 opens upon each side face of the piston, and one set of passages 17 extends from one set of said ports 16 to one edge of the piston, and the other set of said passages 17 extend from the other set of said ports 16 to the other edge of the piston. The piston oscillates from one side of the piston-chamber to the other, and

the sets of ports 16 are so arranged that when the piston is at one end of its throw the ports 16 of one set register with one of the openings 8, and when the piston is at the opposite end of its throw the ports 16 of the other set register with the other opening 8.

Through the forward end of the central casing-section 3 is an elongated opening 18, through which extends a shank 19, suitably secured to the piston and carrying the hammerhead 20, said shank 19 being adapted to oscillate in said slot or opening 18.

It will now be apparent that steam or some other suitable motive fluid being admitted through the inlet-pipe C and the piston being at one end of its throw the incoming steam passes through the appropriate passage 5 and enters one set of passages 17 through the appropriateports 16, the steam being discharged from said passages 17 into the space at that side of the piston adjacent the end of the piston-chamber at which the piston has stopped. This steam acts against one edge of the piston and forces the latter toward the opposite end of the piston-chamber, the supply of motive fluid being cut off as the ports pass the opening 8, with which they have been in alinement. As the piston reaches the end of its stroke the second set of ports 16 come into alinement with the opposite opening 8, and the piston is driven in a reverse direction in a manner which will be readily apparent. The forward end of the piston is of such length with relation to the slot or opening 18 that-shortly before the piston reaches the end of its stroke in a given direction what may be termed the rear edge of the piston clears the solid portion of the casing at the rear of the piston, and the steam which has been propelling the piston is thus permitted to escape through said opening 18.

I am aware that minor changes in the construction, arrangement, and combination of the several parts of my device can be made and substituted for those herein shown and described without in the least departing from the nature and principle of my invention.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is

In a tube-cleaner, a casing comprising a central section having a piston-chamber therein extending from side to side thereof, an opening through one end of said central section and communicating with said piston-chamber, and side sections each of which is provided with a passage opening at one end into'said piston-chamber and at its other end upon the face of the side section adjacent said central section, said central section having an inletpassage communicating with said first-mentioned passages when the casing-sections are assembled, a piston in said piston-chamber, a passage through. said piston and opening upon one edge thereof, a port in said piston communicating with said passage, a second passage through said piston opening upon the opposite edge thereof, a second port in said piston communicating with said second passage, said ports being adapted to respectively register with said passages in said casing-sections at the respective ends of the throw of said piston, a stem upon said piston and extending through the said opening in the end of said central casing-section, and a hammerhead upon said stem; substantially as described.

Intestimony whereof I hereunto aflix my signature, in the presence of two witnesses, this 7th day of September, 1903.

GUSTAV O. QUASEBARTH.

Witnesses:

LANDON CARTER, WALTER L. RoBIsoN. 

